I prefer Cardano. Both are solid projects, strong team etc... but
ADA is
1- One of the 10 biggest coins according to total marketcap data
2- Easier to buy for retail/institutional buyers
3- ADA/BTC price is relatively cheaper than ETN/BTC price according to all-time-high statistics.
4- High probability for ADA ETF in the next years
I agree with the reason you gave and from that we can see that cardano is much better than electroneum and I think electroneum is not feasible compared to cardano.